CVE-2025-5702

Name	CVE-2025-5702
Description	The strcmp implementation optimized for the Power10 processor in the GNU C Library version 2.39 and later writes to vector registers v20 to v31 without saving contents from the caller (those registers are defined as non-volatile registers by the powerpc64le ABI), resulting in overwriting of its contents and potentially altering control flow of the caller, or leaking the input strings to the function to other parts of the program.
Source	CVE (at NVD; CERT, ENISA, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
Debian Bugs	1107365

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
glibc (PTS)	bookworm	2.36-9+deb12u14	fixed
	bookworm (security)	2.36-9+deb12u7	fixed
	trixie	2.41-12+deb13u3	fixed
	forky, sid	2.43-4	fixed

The information below is based on the following data on fixed versions.

Package	Type	Release	Fixed Version	Debian Bugs
glibc	source	bullseye	(not affected)
glibc	source	bookworm	(not affected)
glibc	source	(unstable)	2.41-9	1107365

Notes

[bookworm] - glibc <not-affected> (Vulnerable code introduced in 2.39)
[bullseye] - glibc <not-affected> (Vulnerable code introduced in 2.39)
https://sourceware.org/bugzilla/show_bug.cgi?id=33056
https://sourceware.org/pipermail/libc-alpha/2025-June/167381.html
Introduced with: https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=3367d8e180848030d1646f088759f02b8dfe0d6f (glibc-2.39)